'Because' vs 'Because of'
The difference as well as similarlity between the two has been quite obvious and we do often commit mistakes in our creative having as we fail to grasp the basic difference that exists between the two. The similarity between the two is that both are used to suggest cause/ reason.
1. 'Because' is a sub-ordinate conjunction while 'because of' is a preposition.
2. 'Because' is followed by a subject and a predicate. 'Because of' is followed by a noun.
3. 'Because' generally does not start a sentence but 'because of' can be used in the middle of a sentence as well as in the beginning.
Puja did not go to school because the weather was cloudy.
Ram could not attend the class yesterday because of illness.